Вакцинація, математика, розрахунок
https://www.cdc.gov/measles/transmission.html
https://www.cdc.gov/measles/downloads/MeaslesDataAndStatsSlideSet.pdf
https://www.cdc.gov/vaccines/vpd/mmr/public/index.html
https://www.globalresearch.ca/measles-vaccines-kill-more-people-than-measles-cdc-data-proves/5429736
https://en.wikipedia.org/wiki/MMR_vaccine
https://www.iow.nhs.uk/Downloads/Health%20Visiting_School%20Nursing/MMR%20mythsandtruths.pdf
https://sciencenordic.com/denmark-diseases-prevention/mmr-vaccine-also-effective-against-diarrhoea-and-otitis/1397758
https://www.who.int/news-room/fact-sheets/detail/measles
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